<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>Learn JavaScript</title>
	</head>
	<body>
		<a href="1.html">用法</a>
		<br />
		<a href="2.html">输出</a>
		<br />
		<a href="3.html">函数</a>
		<br />
	</body>
</html>
